Pointing device for ordnance



m SCHRMANN. POINTING DEVICE FUR ORDNANCE.

APPLICATION FILED SEPTJI. i920.

Patent@ Feb. 15,1921.

Inventor narran srarasirgra 'l' FFEQE.

RICHARD SCHIRMANN, 0F ESSEN, GERMANY, ASSIGNOR TO FRIED. KRUPIPAKTIENGESELLSCHAFT, OF ESSEN-ONTHERUHR, GERMANY.

PorNTING DEVICE son ORDNANCE.

To all whom t mayA concern Be it known that I, RICHARD SGHRMANN,residing at Essen, Germanya citizen of the German Republic, haveinvented a Certain new and useful Improvement in Pointing Devices forOrdnance, of which the following is a specification.

This invention relates-to pointingY devices for ordnance, in which thegun barrel can be rotated labout the axis of the trunnions independentlyof the two parts of the sight-V ing device, which can be rotatedrelatively to each other to correspond to the tiring angle and can beadjusted by means of adjustment marks in a definite angular positionwith respect to one of these parts. rlhe invention refers to a pointingdevice of this kind, in which all the'parts, which determine Ytheelevation of the gun barrel Vare so to the plane ofelevation of thoseparts of the pointing device concerned,

Fig- '2 is a side elevation corresponding to Fig. 1, looking fromtheleft, and

Fig.,.3 is a section on the line 3-3 of Fig. l looking from the left.

The gun barrel (not shown) rotates relatively to thecarriage B about theaxis of the two trunnions, of which only one, shown in the drawings. Thejournal A. of

the trunnion shown has a cylindrical exw tension AA1, which issurrounded by .a hollow journal Z22 arranged on the frame B1 ofV thesighting device. The frame B1 is rigidly connectedV to the gun carriagein an easily detachable mannervby a screw nut a2 Ywhich is Xed on ascrew-threaded partV of the VeX-V tension A1 and by means of a bolt'C,passed through two eyes b3 .on the gun carriage. 0n the hollow journalb2 is pivotally mounted a sleeve D, which carries asighting telescopeD1.

The sleeve D isprovided with a series of teeth d2, V'withwhich awormE niountedV in thel frame B1 gears, sovthat, by rotating the worm, thesighting line of the telescope D1 can be adjusted in the direction ofthe ele-v V`vatioI-rof the gun.kr .Qn the hollow-journal b2 alsopivotallymounted a sleeve F,

A, is

' Speccation of Letters Patent. Patented Feb A15, 1921 Application filedSeptember 3, 1920.v Serial No. 408,100. A

which is surrounded bythe sleeve D and is coupled by a pin f2 to asleeve F1 likewise mounted on the hollow sleeve b2 and lying outside thesleeve D. The sleeve F1 has a.V

series of teeth f3, with which a worm G mounted on the sleeve D gears.The sleeve D, which 4carries the sightingftelescope D1 and the doublesleeve F F1, which can be rotated by the worm gearing f3 G relativelythereto as a whole form the two parts of the sighting device, which canbe rotated relatively to each other to correspondto the attachmentangle, o r proper inclination corresponding to the desired range.

The range corresponding to the attachment angle is read off by means ofa gradua-V tion f5 arranged'on a projection f4 on the sleeve F (see Fig.2) together with the mark Z4 on the edge of a window cl3 provided in thesleeve B for the purpose of render-ing the graduation f5 visible.Finally there is mounted on the hollow journal b2 another sleeve H,which can be rotated independently of the sleeves D and F F1 and isprevented from moving axially by a ring b4 screwed H is mounted apointer H1. the free end of which is provided with an adjusting mark acoupling piece a3 rigidly attached to the journal A.

On the sleeve F1 is mounted a Vsecond pointer f6, which lcarries a markf1, which canbe adjusted tothe mark h2 on the Vpointer H1 (see Figs. 2and When the sleeve F F1V is adjusted by turning the worm so that themark Z4 (see Fig. 2) kpoints to the zero pointof the graduationf5 and,Akat the same time the sleeve D is rotated by Vvsleeve D is first broughtby the worm gearing E Z2 into an angular position, in whichthe'sightingl line of the telescope D1 points on the target and thesleeve FF1 with the pointer f6 is so adjusted by the worm gearing Gifs,that the divisionmark yof the grad- A8() on to the hollow journal b2.Onvthe sleeve 71,2 (see Figs. 2 and 3) andy which is coupled to thejournal A by a lug ha on it which. lugengages in a corresponding recessa* in nation f5, corresponding to the desired range, is opposite themark d". Finally an elevation is imparted tothe gun barrel by means ofthe elevating gear, so that the mark 7b2 of the pointer H1, which is inconsequence of its being coupled by the lug ha to the member A, whichexecutes the same rotary movement as the gun barrel, likewise takes partin the movement of this latter, is brought into a position in which itis opposite the mark f7. The gun is then pointed for elevation on thetarget.

After the removal of the screw nut a2 and the bolt C, the frame B1 withthe hollow journal b2 and all the parts of the pointing device mountedthereon can be separated from the gun carriage by pushing it in thedirection of the axis of the journal A, all the parts determining theelevation namel the sighting device and the member H 1 remaining therebycombined.

Claims:

l. In a device of the class described the combination with anindependently rotatable gun, and horizontal trunnions, of a sightingdevice, said sighting device comprising two parts which are adjustablerelatively to one another, and a coperating pointer mounted on a guntrunnion and rotatable therewith, substantially as and for the purposeset forth.

2. A pointing device for ordnance adapted to be positioned upon the guntrunnion, said pointing device comprising a hollow journal mounted uponsaid trunnion, a telescope supporting sleeve rotatably mounted on saidjournal, a telescope supported by said sleeve, means for rotating saidsleeve, a pair of additional sleeves mounted on said journal, a pointercarried'by said second sleeves, a second pointer mounted to rotate withsaid trunnion, means for independently operating said second pair ofsleeves, substantially as and for the purpose set forth.

3. A detachable pointing device for ordnance comprising a hollow journaladapted to be supported upon the trunnion of the gun support, a sightingtelescope, a sleeve rotatably mounted on said journal for supportingsaid sighting telescope, a pair of second sleeves connected to rotatesimultaneously upon said journal, said pair of sleeves coperating withsaid telescope supporting .sleeve for indicating the range, means forindependently rotating saidv telescope supporting sleeve and said pairof sleeves, a pointer-carryingsleeve rotatably mounted upon saidjournal, means for operatively connecting said pointer sleeve to saidtrunnion, said means comprising a stud on said pointer sleeve, acouplingpiece on said trunnion and removable means Vfor retaining saidjournal on the trunnion, substantially as described.

4. A pointing device for ordnance comprising a gun carriage and a gunbarrel having a trunnion rotatably mounted on the gun carriage andpositively connected to the frame coaxially with said trunnion, meansfor adjusting said two rotatable members relatively to each otheraccording to the iring angle of the gun, a third rotatablemember coaxialwith said trunnion, also mounted on said frame, a clutch adapted to bethrown out of action for coupling said third rotatable member to saidtrunnion, and means fixing a particular angular position of said secondand third rotatable members with respect to each other, said fixingmeans comprising Atwoadjusting marks registering with each other whensaid second and third rotatable members assume their par ticular angularposition with respect to each other.

5. A pointing device for ordnance comprising a gun carriage and a gunbarrel having a trunnion rotatably mounted on the gun carriage andpositively connected to the gun barrel for rotary movement therewith,said pointing device comprising a sighting means carrier, ay detachablevframe rigidly connected to the gun carriage, said frame having a hollowjournal coaxially mounted on said trunnion, a rotatable member coaxiallymounted on said hollow journal, and being positively connected to saidsighting means carrier, a second rotatable member coaxially mountedon'said hollow journal, means for adjusting said two rotatable membersrelatively to each other according to the'firing angle ofl the gun, athird rotatable member also coaxially mountedfon said hollow journal, aclutch adapted to be thrown out of action for coupling said thirdrotatable member to said trunnion, and means fixing a particular angularposition of said second and third rotatable members with respect to eachother, said xing means comprising two adjusting marks reglsterin witheach other when said second and thir rotatable members assume theirparticular angular position with respectV to each other.

6. A pointing device for ordnance comprising a gun carriage and a gunbarrel having a trunnion rotatably mounted on the gun carriage andpositively connected to the gun barrel for'rotary movement therewith,said pointing device comprising a sighting means carrier, a detachableframe rigidly, connected to the gun carriage, la rotatable'membermounted on said frame coaxially with said trunnion 'and being posi- 130tively connected to said sighting means carrier, 'a secondrotatable'lnember mounted on said frame coaxially with said trunnion,means 'for adjusting said two rotatable members relatively to each-otheraccording to the ring' angle of the gun, a thirdrotatable member coaxialwith said trunnion, also mounted on said frame, a clutch adapted to 'bethrown out of action for coupling saidthird rotatable member to saidtrunnion, an arm arranged on said second rotatable mem- Essen, Germany,this 27th day of ber and another arm arranged on said third Y rotatablemember, saidarms carying adjusting marks adapted to register with eachother..

The foregoing

